1. The act of being a D-bag and causing great annoyance and emotional dismay in at least two people at the same time. Few people are able to accomplish such a feat, except of course my uncle Marco. 2. Getting two peoples "goats," (nerves), at the same time. 3. on rare occasions sodomizing two goats at once.
Beth: Dayum, uncle Marco just committed a twogoater.
Bruce: I know, what a D-bag huh?

or

Beth: Eewww, uncle Marco just committed a twogoater.
Bruce: Gross, what a D-bag huh?
by Brucifer aka: PB&J May 26, 2008
Get the Twogoater mug.